ZnO:Eu thin-films: Sol–gel derivation and strong photoluminescence from 5D0→7F0 transition of Eu3+ ions

Photoluminescent properties of LiSrxBa1−xPO4:RE3+ (RE=Sm3+, Eu3+) f–f transition phosphors

“…In this situation, the 5 D 0 → 7 F 0 transition is in principle forbidden due to the same total angular momentum. Thus, the corresponding peak should be inexistent or very weak in the PL emission spectrum [20][21][22]. The emission spectra of phosphors LiSr x Ba 1−x PO 4 :Eu 3+ with different Eu 3+ concentrations are illustrated in Fig.…”

Tunable deep-level emission in ZnO nanoparticles via yttrium doping

“…No doubt, doping selective elements into ZnO matrix offers an effective method to realize it. Recently, rare-earth (RE) ion doped ZnO nanostructures have attracted intensive interests, since RE elements have great possibility to efficiently modulate the emission in the visible range due to their unique optical properties and excellent qualification to be radiative centers [4][5][6][7][8].…”

Red luminescence of Eu3+ doped ZnO nanoparticles fabricated by laser ablation in aqueous solution

“…Ferromagnetism above room temperature were reported in Mndoped ZnO bulk and films [21]. As for optical centers, rare-earth-doped ZnO is reported, and may represent a new class of luminescent materials for advanced applications such as thin-film electroluminescence devices [22], flat panel displays [23], and infrared-to-visible light fluorescence imaging [24]. Among rare-earth ions, Eu 3+ has the high color purity and luminescence efficiency in red region [25].…”

“…Efficient energy transfer from ZnO host to Eu 3+ was reported to occur in monodisperse Eudoped ZnO nanoparticles [26]. Although many techniques like sol-gel [22,27], hydrothermal [23,28], codecomposition [26], microemulsion [29], colloid [30], thermal evaporation [31,32], etc., have been reported to synthesize Eudoped ZnO nanoparticles, demonstration of doping of Eu 3+ into ZnO host lattice and energy transfer from ZnO to Eu 3+ are not straightforward. One of the key points is believed to be lack of spectroscopic evidence of doping of Eu 3+ into ZnO host lattice.…”